Entity Framework Core (EF Core) does wrap the SaveChanges
method in a transaction by default. When you call SaveChanges
to persist changes to the database, EF Core ensures that all the changes are committed as a single transaction. This means that if any part of the operation fails (e.g., due to a validation error or a database constraint violation), none of the changes will be applied to the database.
Here's how it works:
SaveChanges
, EF Core starts a database transaction.This behavior ensures that your data remains in a consistent state, and either all changes are applied or none are. If you need more control over transactions, such as specifying isolation levels or manually managing transactions, EF Core provides options for doing so. You can use methods like BeginTransaction
, Commit
, and Rollback
on the DbContext's Database property to work with transactions explicitly.
In this example, you can see how you can manually manage a transaction around your database operations, providing more fine-grained control when needed. However, for most scenarios, the default behavior of wrapping SaveChanges
in a transaction is sufficient.
using (var dbContext = new YourDbContext())
{
using (var transaction = dbContext.Database.BeginTransaction())
{
try
{
// Perform your database operations here
dbContext.SaveChanges();
// If everything is successful, commit the transaction
transaction.Commit();
}
catch (Exception ex)
{
// Handle exceptions and optionally roll back the transaction
transaction.Rollback();
}
}
}
In this example, you can see how you can manually manage a transaction around your database operations, providing more fine-grained control when needed. However, for most scenarios, the default behavior of wrapping SaveChanges
in a transaction is sufficient.